... 4.Insulation grade:I 5.Corrosion-proof grade:WF2 Explosion proof floodlight,explosion proof lighting,explosion proof luminaire. Rated Voltage220VLight sourceAverage service ... and culvert, plaza, and building, etc.FeaturesExcellent explosion-proof performance enables the light to work safely in explosive ... and strong attack of sea wave.The housing is made of high strength aluminum alloy materials ...